GitHub: ConnectOracle

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Overview

The ConnectOracle contract is designed to interact with the Cosmos blockchain to fetch and process price data for various currency pairs from the Connect oracle.

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Imports

Import FileDescription
ICosmos.solInterface for interacting with the Cosmos blockchain.
JsmnSolLib.solLibrary for JSON parsing.
IsoToUnix.solLibrary for converting ISO date strings to Unix timestamps.

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Structs

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Price

A struct to hold price information.
  • uint256 price: The price value.
  • uint256 timestamp: The timestamp of the price.
  • uint64 height: The block height at which the price was recorded.
  • uint64 nonce: A unique identifier for the price record.
  • uint64 decimal: The decimal precision of the price.
  • uint64 id: The ID of the price record.

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Constructor

constructor() {}
The constructor initializes the contract. It does not take any parameters or perform any actions upon deployment.

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Functions

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get_all_currency_pairs

Fetches all available currency pairs from the Cosmos blockchain. 
function get_all_currency_pairs() external returns (string memory)

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Returns

TypeDescription
string memoryA JSON string containing all currency pairs

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get_price

Fetches the price for a specific currency pair from the Cosmos blockchain. 
function get_price(string memory base, string memory quote) external returns (Price memory)

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Parameters

NameTypeDescription
basestring memoryThe base currency of the pair
quotestring memoryThe quote currency of the pair

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Returns

TypeDescription
Price memoryA struct containing the price information

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get_prices

Fetches prices for multiple currency pairs from the Cosmos blockchain. 
function get_prices(string[] memory pair_ids) external returns (Price[] memory)

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Parameters

NameTypeDescription
pair_idsstring[] memoryAn array of currency pair IDs

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Returns

TypeDescription
Price[] memoryAn array of Price structs containing the price information for each pair

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join

Concatenates an array of strings with a specified separator. 
function join(string[] memory strs, string memory separator) internal pure returns (string memory)

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Parameters

NameTypeDescription
strsstring[] memoryAn array of strings to be concatenated
separatorstring memoryA separator to be used between the strings

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Returns

TypeDescription
string memoryThe concatenated string

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get_price_from_tokens

Parses a JSON string to extract price information and populate a Price struct. 
function get_price_from_tokens(
    string memory json,
    JsmnSolLib.Token[] memory tokens,
    uint256 priceObjectIndex
) internal pure returns (Price memory)

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Parameters

NameTypeDescription
jsonstring memoryThe JSON string containing the price information
tokensJsmnSolLib.Token[] memoryAn array of JSON tokens
priceObjectIndexuint256The starting index of the price object in the tokens array

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Returns

TypeDescription
Price memoryA struct containing the parsed price information